Jackie, what a great adventure!
I don't know anything about Poland or traveling there--yet--but I'll bet there is a lot of info out there for you.
I hope some friends here can steer you right.
I've been traveling on my own since 1990 when I realized I wasn't going to go at all if I waited for someone to go with me.
I think you will have a wonderful time. Try to learn some basic polite phrases and useful vocabulary. Also how to read their writing. Sometimes when you have learned the sound of a language and you sound out the words in writing, you find out that they're English loan words. LOL!
I found out while in Germany in 2007 my Grand Mothers side of the family homelands have been part of Poland since 1945. I told my father since 1945 we have been a little Polish to which my Father replied: "No, your Moma was."
My Ancestors all came from Prussia in 1869. Much of former Prussia is now part of Poland.
Best way to travel in Europe is by train. You can buy weekly passes.
Not to burst your bubble.
It's dangerous to go to the ex-Soviet countries.
If you are a Teacher, lawyer, professional they could keep you.
A lawyer friend of mine went.
They didn't keep him.
You might plan a trip to Mexico next.
I probably should not have mentioned Lawyer................ LOL
Do they want old goats in Poland?